tristate

or tri-state

[ trahy-steyt ]
/ ˈtraɪˌsteɪt /

adjective

pertaining to a territory made up of three adjoining states: a tristate league.
pertaining to the three adjoining parts of such states: the tristate region of Missouri, Kansas, and Nebraska.

Origin of tristate

Example sentences from the Web for tristate

British Dictionary definitions for tristate

tristate
/ (ˈtraɪˌsteɪt) /

adjective

(of a digital computer chip) having high, low, and floating output states